PLINY

NATURAL HISTORY

WITH AN ENGLISH TRANSLATION

IN TEN VOLUMES

VOLUME VI

BOOKS XX—XXIII

W. H. S. JONES, LITT.D., F.B.A.,

The seal of Harvard University: a circular laurel wreath enclosing a shield. Within the shield are three open books. The top left book is inscribed "VE", the top right "RI", and the bottom book "TAS", together forming the Latin motto "VERITAS" original: "VERITAS" — meaning "Truth"..

CAMBRIDGE, MASSACHUSETTS

HARVARD UNIVERSITY PRESS

LONDON

WILLIAM HEINEMANN LTD

1961